US PATENT SUBCLASS 417 / 382
.~.~.~ Plural pumping members; one additionally supplying motive fluid for second

Current as of: June, 1999
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417 /   HD   PUMPS

321  DF  MOTOR DRIVEN {32}
375  DF  .~ Fluid motor {9}
379  DF  .~.~ With motive fluid generator {5}
382.~.~.~ Plural pumping members; one additionally supplying motive fluid for second

DEFINITION

Classification: 417/382

(under subclass 379) Apparatus including a plurality of pumping members which pump fluid for external use, one of said pumping members also additionally supplying motive fluid for a fluid motor which drives another pumping member.

SEE OR SEARCH THIS CLASS, SUBCLASS:

245, for serially arranged pump units in which the fluid output of one of the units provides motive fluid for a fluid motor driving another of the units.